Fix dictionary element load to pass correct elements kind.

test/mjsunit/regress/regress-3158.js

Index: test/mjsunit/regress/regress-3158.js
diff --git a/test/mjsunit/regress/regress-3158.js b/test/mjsunit/regress/regress-3158.js
new file mode 100644
index 0000000000000000000000000000000000000000..c69127395e532cd17db872022e3a5f8a51c44d66
--- /dev/null
+++ b/test/mjsunit/regress/regress-3158.js
@@ -0,0 +1,24 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Flags: --allow-natives-syntax
+
+Array.prototype[0] = 'a';
+delete Array.prototype[0];
+
+function foo(a, i) {
+  return a[i];
+}
+
+var a = new Array(100000);
+a[3] = 'x';
+
+foo(a, 3);
+foo(a, 3);
+foo(a, 3);
+%OptimizeFunctionOnNextCall(foo);
+foo(a, 3);
+Array.prototype[0] = 'a';
+var z = foo(a, 0);
+assertEquals('a', z);